Buer C S, Masle J, Wasteneys G O
Research School of Biological Sciences, The Institute of Advanced Studies, The Australian National University, Canberra, ACT.
Plant Cell Physiol. 2000 Oct;41(10):1164-70. doi: 10.1093/pcp/pcd042.
The cause for the wave-like growth of Arabidopsis thaliana roots on semi-solid medium remains unclear. Researchers have hypothesized a gravity-induced touch-response, circumnutation, or combinations thereof act as the major stimuli. Our data demonstrate that the gaseous environment within the Petri dish can override gravitational effects. Furthermore, we show that medium ion concentrations and gelling polymers modify the wave response. Although the mechanisms driving our wide-ranging wildtype phenotypes are currently unknown, these results are of immediate significance for interpreting genetic and physiological modifications of environmentally and genetically induced characteristics.
拟南芥根在半固体培养基上呈波浪状生长的原因尚不清楚。研究人员推测重力诱导的触觉反应、植物的回旋转头运动或二者的组合是主要刺激因素。我们的数据表明，培养皿内的气体环境可以克服重力影响。此外，我们还表明，培养基离子浓度和凝胶聚合物会改变波浪反应。尽管目前尚不清楚驱动我们所观察到的广泛野生型表型的机制，但这些结果对于解释环境和遗传诱导特征的遗传和生理修饰具有直接意义。
